No model



PATENTED SEPT. 20, 1904';

D. H. TEAS.

LATHE DRIVER.

APPLICATION FILED MAR. '1. 1904:.

' 2 SHEETSSHEBT 1.

N0 MODEL.

A u A r No. 770,546. PATENTED SEPT, 20, 1904 1). H. TEAS. LATHE DRIVER. APPLICATION FILED HA3. 7. 1904. i N0 MODEL. V v r 2 SHEETS-SHEET 2.

W Ffi R;

UNITED STATES Patented September 20, 1904.

PATENT OFFICE; p

DANIEL H. TEAS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR To NILE's BEMENT-PoND COMPANY, OF JERSEY CITY, NEW JERSEY.

LATHE- SPECIFICATION forming part of Letters Patent Ne. 770,546, dated September 20, 1904;

Application filed March 7, 1904.

To all whom; it may concern.-

Be it known that I, DANIEL H. TEAs,a citizen of the United States, residing at New Haven, New Haven county, Connecticut, (post-office address 64 Spring street, New Haven, Connecticut,) have invented certain new and useful Improvements in Lathe-Drivers, of which the following is a specification.

In the turning of steel tired car wheels while upon their axles great difliculty has been experienced in getting a satisfactory driving grip upon the work without bringing unde sired bending strains upon the axle. There is a class of lathes specially devised for this work and embodying a central tubular spindle with a chuck on each end, as will be seen in Cullen and Sees patent, No. 312,615, of

February 24, 1885, in which lathe the driving was designed to be done from the face-plates referred to. In certain modifications of the lathe referred to non-driven chucks were provided at the outer ends of the axle to grip and steady the wheels. The present construction is designed to still further improve upon lathes of this character, and the improvements will wheels of the pair; Fig. 3, a plan of one of the drivers; Fig. 4, a side view of one of the drivers; Fig. 5, a plan of one of the chuckjaws, and Fig. 6 a perspective view of one of the chuck-jaws;

In the drawings, 1 indicates the hollow spindle; 2, the face-plates or chucks on its opposite ends, lying near the inner faces of the car-wheels; 3, the central gear on the spindle,

-by means of which power is applied to turn it, this gear, the spindle, and the chucks on the ends of the spindle being usually gapped to permit the wheeled axle to be gotten into place in the lathe; 4, the chucks at the outer faces of the car-wheels; 5, the chuck-jaws on Serial No. 196,754. ca nicdeLl these outer chucks, the same being intended,

preferably, to be adjusted outwardly, so as to 5 take a grip within the outward projection of the tire of the car-wheel; 6, a subjaw mounted in each of the chuck-jaws 5 and adapted for movementtoward and against the edge of the tire; 7, a wedge crossing the chuck-jawand engaging behind the subjaw 6 and serving when adjusted to bring the subjaw into proper position against the edge of the tire; 8, a series l of abutments projecting outwardly from the face-plates or chucks 2 and presentingdriv 6O ing-shoulders forwardly with reference to, the direction of rotation of the work; 9, a thrustpiece having its heel seated against the abut: ment 8, the thrust-piece projecting diagonally from the abutment toward the inner face of 5 the Wheel-tire; 10, a dog having its heel piv-v oted to the forward end of the thrust-piece and having a serrated gripping-face presented against the inner face of the tire, and 11 a jack-screw interposed between the rear face 7 0 of the dog and the outer face-plate 2 and serving to force the dog to the car-wheel.

It'is preferred that each of the outside chucks 4 have a plurality of jaws, and. it'is preferred that the inner chucks be provided with a corresponding number of the dogs. Whatever be the number of jaws and dogs, they should be angularly disposed, so'that a chuck-jaw will be opposite a dog.

The chucks 4 may be of ordinary construc- 30 tion, their chuck-jaws 5 being radially adjustable in the manner usual in chucks, Fig. ,2 showing the heads of the usual radially-disposed jaw-adjusting screws projecting out wardly from the periphery of the chuck. In 5 I outer face of the tire by means of the wedge 7. The peculiar chuck-jaws may be originally constructed to form the jaws of the chuck, or if a chuck with ordinary jaws be employed they may be built out by having such structures as illustrated in Figs. 5 and 6 bolted to them by bolts disposed as indicated by the views of their heads, appearing as circles in Fig. 5 and as ellipses in the perspective view seen at Fig. 6. a

The subjaws of the chuck-jaws should be adjusted to a proper normal bearing against the tire without bringing undue disturbing strains upon the wheels and axles. When this has been done,then the jack-screws should be adjusted to bring the dogs forcibly against the inner faces of the tires. is that each tire is subjected to a powerful driving grip to almost any extent desired without exerting disturbing strains upon the wheels or axle. The dogs 10 are made doublefaced, so that either face may be used for gripping, and countersinks in the serrated faces of the dogs provide for the heads of the jack-screws. My preference is to employ'the adjustable chuck-jaws on the outer faces of the tires while the dogs engage the inner faces rather than that the arrangement shall be reversed, the main point, however, being that a given tire, while having its tread and flange exposed for turning, is powerfully gripped sidewise by opposing agents not tending to bring disturbing strains upon the tire to throw it out of true or to' spring the axle. In the selected example the driving power is applied through driven chucks or face-plates at the inner faces of the tires, and the dogs are appropriately placed upon these chucks or faceplates instead of.the outside ones, it being obvious that the dogs should be upon the chucks or face-plates to which the driving power is I applied.

1 claim as my invention 1. In a lathe-driver, the combination, substantially as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a jaw carried by the first face-plate and arranged to be adjusted to-v ward and against the tire, a dog to be seated against the tire opposite said jaw and between the tire and the second face-plate, an abutment carried by the second face-plate for urging the dog in the driving direction of angular motion, and means disposed between the dog and second face-plate to force the dog to the tire.

2. In a lathe-driver, the combination, substanti ally as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a plurality of jaws carried by the first face-plate and arranged to be adjusted toward and against the tire, a dog to be seated against the tire opposite each of said jaws and between the tire and the second face-plate, abutments carried by the second The result of this arrangement face-plate for urging the do s in the driving direction of angular motion, and means disposed between the dogs and second face-plate to force the dogs to the tire.

3. In a lathe-driver, the combination, substantiall y as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a jaw carried by the first face-plate and arranged for radial adj ustment, a subjaw carried by the jaw and arranged to be adjusted toward and against the tire, a dog to be seated against the tire opposite said subjaw and between the tire and the second face-plate, an abutment carried by the second face-plate for urging the dog in the driving direction of angular motion, and means disposed between the dog and second face-plate to force the dog to the tire.

I. In a lathe-driver, the combination, substantially as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a aw carried by the V first face-plate and arranged to be adjusted toward and against the tire, a dog to be seated against the tire opposite said jaw and between the tire and the second face-plate, an abutment carried by the second face-plate for urging the dog in the driving direction of angular motion, and a jack-screw interposed between the (log and second face-plate to force the dog to the tire.

5. In a lathe-driver, the combination, substantially as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a jaw carried by the first face-plate and arranged to be adjusted toward and against the tire, a dog to be seated against the tire opposite said jaw and between the tire and the second face-plate, an abutment carried by the second face-plate for urging the dog in the driving direction of angular motion, a thrust-piece disposed between the dog and the abutment, and means disposed between the dog and second face-plate to force the dog to the tire.

6. In a lathe-driver, the combination, substantially as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a jaw carried by the first face-plate and arranged to be adjusted toward and against the tire, a dog to be seated against the tire opposite said jaw and between the tire and the second face-plate, an abutment carried by the second face-plate for urging the dog in the driving direction of angular motion, a thrust-piece pivoted to the rear end of the dog and having its heel engaging said abutment, and means disposed between the dog and second face-plate to force the dog to the tire.

7. In a lathe-driver, the combination, substantially as set forth, of a first face-plate and a second face-plate arranged to receive a tired car-wheel between them, a jaw carried by the ITO first face-plate and arranged to be adjusted toward and against the tire, a' dog to be seated against the tire opposite said jaw and between the tire and the second face-plate and having opposite serrated faces, a thrust-piece pivoted to'the rear'end of the dog, an abutment car-- ried by the "second face-plate for urging the thrust-piece in the driving direction of angular motion, and means disposed between the dog and second face-plate to force the dog to the tire.

8. Ina lathe, the combination, substantially as set forth, of a hollow spindle adapted for disposition upon a car-axle between a pair of car-wheels fastupon the axle, a face-plate on each end of said spindle, face-plates in position to stand near the outer faces of the wheels, abutments car'riedby the first-memtioned face-plates to' urge the dogs in the dri'v ing direction of angular motion, and jackscrews disposed between the dogs and the first-mentioned, face-plates to force the dogs against the car-wheels.

VDANIIELH. TEAS.

. Witnesses:

.R. C. M. KrNNEY, .M. E.STODDART. 

